Mapping Luns By Host; Setting Up The Hosts - HP 12000 User Manual

To unmap LUNs by device:
1. Navigate to the Device View window. See the mapping procedure above.
2. Select the appropriate library from the Choose a Library list.
3. Select the devices to unmap.
4. Select Unmap next to the Choose hosts list.
The window refreshes and the newly unmapped devices disappear from the device list. They
are no longer visible to the hosts.
NOTE: After you map or unmap the virtual devices, the VLS automatically reassigns a logical
unit number (LUN) to each virtual library and tape drive created on the VLS to ensure that the virtual
device LUN numbering meets the operating system LUN requirements.

Mapping LUNs by Host

To map LUNs by host:
1. Select the System tab.
2. Expand Chassis in the navigation tree.
3. Expand LUN Mapping in the navigation tree.
4. Select Host View.
The Host View window displays all of the devices that can be seen by a selected host.
5. Select a host from the Choose Host list to view the devices mapped to it.
The window refreshes to show the appropriate device list.
6. Use the View By to narrow the list of devices based on the node.
7. Select the devices to map in the field at the bottom of the window. These devices are currently
not mapped to the viewed host.
You can select multiple devices using Ctrl+click.
8. Select GO next to Map devices.
The window refreshes and the newly mapped devices appear in the list. These devices are
now visible to the host.
To unmap LUNs by host:
1. Navigate to the Host View window. See the mapping procedure above.
2. Select the appropriate host from the Choose Host list.
3. Select the devices to unmap.
4. Select GO next to Unmap selected devices.
The window refreshes and the newly unmapped devices disappear from the list. These devices
are no longer visible to the host.
NOTE: After you map or unmap the virtual devices, the VLS automatically reassigns a logical
unit number (LUN) to each virtual library and tape drive created on the VLS to ensure that the virtual
device LUN numbering meets the operating system LUN requirements.

Setting Up the Hosts

You can configure the hosts in Command View VLS. You will make all of the changes to the hosts
from the Host Setup window.
To open the Host Setup window:
1. Select the System tab.
2. Expand Chassis in the navigation tree.
3. Expand LUN Mapping in the navigation tree.
Managing Virtual Device LUNs 93